Timing device



Oct. 20, 1925- 5 304 T. J. SMULSKI TIMING DEVICE Filed Aug. 18, 1919 Patented Oct. 20, 1925.

UNITED STATES THEODORE J. SMULSKI, OF CHICAGO, ILLINOIS.

'rmmo DEVICE.

Application filed August 18, 1919.

To all whom it may concern:

Be it known that I, THEODORE J. SMULSKI. a citizen of Poland. residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Timing Devices of which the following is a specification.-

My invention relates to timing devices in which a firing spark is provided at the proper time to ignite a gas mixture in the cylinder or cylinders of an internal combustion motor. And the object thereof is to provide a simple. cheap and effective device which shall be accurateand positive in its action and in which the pressure of the moving contact device on the commutator shall be equalized at the varying speeds at which it is revolved.

The principles of my invention are illustrated in the drawings in which Fig. 1 shows a front view of my device with the protectl8 cap removed. Fig. 2 is a vertical section of my device on line 2--2 of Fig. 1. Fig. 3 is a rear view showing one form of the moving contact mechanism. Fig. 4 is a section on line 4-4 of Fig. 2. Fig. 5 is a similar view showing another form of contact. Fig. 6 is a view on line 6-6 of Fig. Fig. 7 shows the commutator mounting.

Fig. 8 is a perspective view of the lever of which a top view is shown in Fig. 6 and a side view is shown in Fig. 5.

Further describing my invention by reference to the drawings in which like char acters of reference denote like parts throughout,

1 is the external shell of a commutator, an opening being made centrally to the face. The cut away rtion is surrounded by an annular insulation piece 2 secured upon the shell by means of rivets 3 or other suitable means. A commutator comprising an insulated portion 4 and the commutator bars 5 of any desired number is secured upon the shell or casing by connections 6 which may be formed integrally with the commutator bars and provided with offset feet 7. Said feet pass through the opening in the face of the shell and beyond the annular insulation 2 and are secured in place thereon by means of the bolts 8 which pass through said insulating ring at the cut away points 10 in the metal casing. Clips 11 made to conform with the connection 6 and the foot '7 thereon. are adapted to act as clamps in conjunction Serial No. 318,097.

with said bolts 8 to secure the distribution lead wires 12. The engine timing shaft 15 is reduced in size at 16 to receive a sleeve 17 which is securely attached thereto by a nut 18 or other suitable means. Said sleeve is provided with a radial arm 19 having a laterally extended flange at its end. Said sleeve passes through the commutator and is adapted to rotate together with its arm 19 out of electrical contact therewith.

A lever shown in one. form in Figs. 5, 6 and 7 comprises two side pieces 25 held to gether by a bolt or rivet 26 which passes through the spacing piece 27 and also serves to secure said lover upon the arm 19. One arm of said lever is provided with off-sets 28 between which and a retaining bolt 29 is held the brush 30 whose end 31 is adapted for frictional contact upon the outer face of the comn'nitator. Said brush has a notch in one face adapted to receive the bolt 29 which may be secured in place by means of cotter pin 81. When the said device is pivotally mounted on the arm 19 by means of the pivot bolt 26 the brush is held in normal contact with the commutator by means of the spring 33 one end of which is attached to the flange 20 of arm 19 and the other attached at 31 to the other arm of said lever, the action of said spring being to hold the brush in contact with the armature as it is revolved thereabout by the revolution of the timing shaft 15. The strength of the said spring should be adapted to a low speed of timing shaft. The tendency then will be to make a lighter contact as the engine speed is increased. To counteract this I provide a counter weight 36 on the other end of the said lever the effect of which at all times is to keep the brush in complete contact with the commutator.

An alternative forn'i of brush is illustrated in Figs. 3 and 4 and provides a rolling contact instead of the sliding one just described. It consists of a wheel or roller 40 secured between the side pieces of the contact lever by means of a pin etl secured in place by means of cotter pin -12. But in either case the balancing action of the counter weight is the same. The protective cap 45 is adapted to fit closely around the edges of the annular insulation 2 and means for advancing or retarding the spark comprises the external lever 15 to which should be attached the controlling rod 46 by which the casing may be partially rotated to advance or retard the fipll'k- Idaim:

1. In a timing device; a commutator, a sleeve passing thro the commutator out of electrical contact therewith and adapted to be secured to a timing shaft, a radial arm on said sleeve, a contact carryin lever pivoted between its ends omsaidra 1- arm and revolvable about the commutator, a contact on one am of the said lever normally to bear on said commutator, and a counter 'weightea the other end of said concarrying lover. r

2. In a device; a commutator, a sleeve passingt ougfli'the commutator out of electrical contact therewith and adapted to be secured tea tim'mgshaft, a radial arm on said sleeve}; contact carryi lever pivoted between its endson said mlll'lll and rmlvable about the commutator, a contact on one arm of said carrier, spring means for nonmlly holding said contact in operative relation to the commutator and a counter weight on the other arm of the said contact carrying lever.

3. In a timing device; a commutator, a sleeve passing through the commutator out of electrical contact therewith and adapted to be secured to a timing shaft, a-radial arm on said sleeve, a contact carryin lever pivoted between its ends on said rafiial arm, revolvable about the commutator, a brush on one arm of said contact carrying lever, spring means for normally hoiding said brush in operative relation to the commutator and a counter weight on the other arm of the said contact carrying lever.

4; In a timing device; a commutator hav ing'commuteter bars-on its peripheral face, a sleeve mounted on the timin shaft, and insulatedly rotatable within t commutater, a radial arm havi one end attached to the sleeve, and the or end extending beyond the peri 1 face of the commutater, a lever pivoted between its ends on said redial arm, a contact carried by one arm of said lever and a counterweight on theetber arm of said lever.

5..Ia a timing devize; a mtm'utator, a u

sleeve mounted on the timing shaft of engine. and I'm-static within the commue tator, a radial arm on said sleeve having ofi aet flange, a lever pivoted between 'its gi ends on and radial arm below said fl ng'yih a brush m one end-of said lover, a com? weight on the other end of said lever, spring to connect the counterweighted o! the'lever to said od-set flange. "1

6. in a timing device; a casing opening in the top themed, an annular sulatiag 'eee toaeid top eoneenfifiiq with as: opening,'a commutator in" 7 casm com rising an insulating ring all; plirra ity commutator bars, said mg logs extended thron the opening hi t p 1nd attagwd i p 7.1a a timiaidevice; a casi'ng'ha an openingiu t top thereofyan insulating piece secured to said-top with said ning,'a I f casing comprising an g plurallity of coizlientiiutator b avmg egs=exten through i; in the top of the and lit bearingupon said insulating cl opledmgztg wiah feotkalnd gstitosecura sa an-c' tosa insu 'pleoelfl and toeach other. 8. In a timing device a casing having opening in the top thereof sulat piece secured to said top condui tric wi said opeaing, a oommmatorfinf 08 861111; halzitng the bars Sheree! attaehod r 88.1 ms mg no an a protective i having flanges mime toengage ripheral edges of said annular healing piece. a

In willie whereof I have hereunto anannular infl.m iminikni i alumina i ELL-rah. 

